Window-sash operator



v. CIM'A. WINDOW SASH OPERATOR. APPLICATI ON Fl-LED SEPT. 29, 1919.

1,339,879. Patented May 11,1920.

vALmrrnti: ems, or CHICAGO, rumors.

WINDOW-SASH OPERATOR.

Specification of Letters Patent. P t t May 11,

Application filed September 29, 1919. Serial No. 327,186.

To all whom it may concern Be it known that I, VALENTINE Cum, a citizen of the United States, residing at Chicago, inithe county of Cook, State of Illinois, have invented certain new and useful Improvements in Window-Sash Operators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in window operators and particularly to devices for raising and lowering window sashes without the use of the ordinary pulleys and weights.

One object of the present invention is to provide a novel and improved-sash operating mechanism whereby either of the sashes may be moved into open or closed position and held at any desired point.

Another object is to provide a novel and improved" means whereby the operating mechanism can be shifted from engagement with one window sash to the other to permit the said other sash to be operated without disturbing the first sash from its position.

Other objects and advantages will be ap parent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is an elevation of the frame and sashes of a window frame, the frame be- I ing partly broken away .to expose the gears and shafts which are used to raise and lower the sashes.

Fig. 2 is a vertical sectional view taken on the line 22 of Fig. 1, to show the gears and shafts and the shifting means therefor. s

Fig. 3 is a horizontal sectional view taken on the line 33 of Fig. 1, just above the top rail of the lower sash.

Referring particularly to the accompanying drawing, 10 represents the vertical side stiles of the window frame, and 11 the window ledge thereof. Mounted in bearings, shown at 12, below the window ledge, is a shaft 13, which extends longitudinally of the window ledge, and has on its ends the bevel gears 14 and 15, respectively, and the central bevel gear 16. Mounted centrally of the lower portion of the window ledge, and extending horizontally outwardly, is a shaft 17 having a crank handle on its outer end,

as shown at 18, and a bevel gear 19 on its inner end which meshes with the central gear 16 of the shaft 17.

Disposed vertically in each of the pockets of the stiles 10 is a shaft 20, the lower end having a bevel gear 21 which meshes with one of the gears 14 or 15, on the shaft 13, and having the bevel gears 22 and 23 on their upper ends respectively. The lower portion of each shaft 20 is mounted in a bracket 2 which is stationary, while the upper portion is mounted in a sliding bracket 2-5, held in normal position by the spring 25. Extending forwardly and rearwardly in. the pockets of the stiles are the horizontal shafts 26 and 27, each having the bevel gears 28 and 29 thereon for engagement by the upper gears 22 and 23 of the shafts 20. Each of the shafts 26 and 27 has the plain pinions 30 and 31 on its ends, the former of which engage with the toothed racks on the vertical edge faces of the lower sash while the latter engage with the toothed racks on the vertical edge faces of the upper sash. Thus when the pinions or bevel gears 22 and 23 are in mesh with the bevel gear 28 and the crank handle 18 turned toward the left, the plain pinions 30 will engage the racks of the lower sash and raise the same. A' reverse rotation of the crank hanclle will cause the sash to be lowered. \Vhen the pinions 22 and 23. are in mesh with the gears 29 the pinions 31 will operate upon the racks of the upper sash and raise and lower the same, according to the direction I of rotation of the crank handle.

Pivotally mounted adjacent the shaft 17 are two bell crank levers 32 and 33, the former of which is connected to one arm of a bell crank lever 34 at the left hand end of the window ledge, while the latter is connected to one arm of a bell crank lever 35 mounted at the right hand end of the window ledge. To the other arms of the levers 32 and 33 there is connected an operating lever 36. Mounted adjacent the upper end of the-one shaft'20 is a bell crank lever 37 and adjacent the upper end of the other shaft is a bell crank lever 38, the former being connected at one arm to the remaining arm of the crank 34 by a rod 39, while the latter is connected by one arm to the remaining arm of the crank 35 by a rod 40. The other arm of the crank 37 is connected to the sliding bracket 25 adjacent thereto, while the other arm of the crank 28 is connected to the sliding bracket 25. The rod 39 extends a short distance above the bracket 37 and is connected to the adjacent end of a centrally pivoted detent lever 41 which is arranged, when shifted in one direction to engage with the teeth of the pin ion 30, and when shifted in the other direction to engage with the teeth of the other pinion 31. The other rod 40 is similarly extended and connected at its upper end to a brake or detent lever 42, the operation of which is similar to that of the lever 41.

When it is desired to raise ,the lower sash the shifting lever 36 is moved so as to shift the shafts 20 so as to bring their upper pinions into mesh with the bevel gears 28, when the crank handle 18 is turned toward the left. If the upper sash is to be lowered the shafts 20 are shifted to engage with the pinions 29, when the crank handle is turned to the right. When the upper sash is to be raised the crank handle is turned to the left, and when the lower sash is to be lowered the crank handle is turned toward the right.

What is claimed is: The combination with the frame and sashes of a window, the sashes havmg racks on their inner vertical edge faces, of horizontal shafts mounted in the side portions of the frame adjacent the meeting point of the sashes, pinions on the said shafts engaging with the racks of the sashes, driven pinions on the said shafts and movable with the said first pinions, vertical shafts in the VALENTINE GIMA.

Witnesses S. A. WILLETTE, LEO RUPOTO. 

